World Products Overvoltage Protection ComponentsThermally Protected Varistors EVTC Serie

EVTC’s are intended, in conjunction with appropriate enclosure design, to help facilitate TVSS module compliance to UL1449. Under extreme abnormal over-voltage conditions, some units will exhibit substantial heating, arcing and venting prior to opening. Modules should be designed to contain this possibility.



  • WPI’s thermally protected MOVs
  • High energy handling capability.
  • Wide voltage range available: 150VAC – 680VAC.
  • Industry standard footprint and wave solderable.
  • UL1449 and CUL 4th Edition recognized. File #E321567. (Meets SCCR 200KA rating).
  • 50KA, 8/20µs peak surge current rating.
  • RoHS compliant.
  • Exceeds industry standard operating and storage temperatures for this type of device. Rated at -40ºC to +85º (operating) and -40ºC to +125ºC (storage).
  • Equipped with normally open micro-switch providing diagnostics (if other micro-switch options are required, please contact WPI).
  • Patents: USA, Germany, China,and Taiwan.

Documents & downloads

Michael Steves
Michael Steves
Product Management +49 2152 8955-211